diff --git a/C/ChainRules/Compat.toml b/C/ChainRules/Compat.toml
index 17da9198f81df94..e0797d7ab73e027 100644
--- a/C/ChainRules/Compat.toml
+++ b/C/ChainRules/Compat.toml
@@ -55,9 +55,12 @@ ChainRulesCore = "0.9.7-0.9"
 ["0.7.23-0.7.25"]
 ChainRulesCore = "0.9.12-0.9"
 
-["0.7.26-0"]
+["0.7.26-0.7.33"]
 ChainRulesCore = "0.9.16-0.9"
 
 ["0.7.28-0"]
 ChainRulesTestUtils = "0.5"
 Compat = "3"
+
+["0.7.34-0"]
+ChainRulesCore = "0.9.21-0.9"
diff --git a/C/ChainRules/Versions.toml b/C/ChainRules/Versions.toml
index e6cc21d494b641b..5bbb4ee19f33c23 100644
--- a/C/ChainRules/Versions.toml
+++ b/C/ChainRules/Versions.toml
@@ -174,3 +174,6 @@ git-tree-sha1 = "f6265a7e32d2c82e9462a06e0d5066284c29b89e"
 
 ["0.7.33"]
 git-tree-sha1 = "118fad132f286ac9df765e0dda94ddba2f0fb279"
+
+["0.7.34"]
+git-tree-sha1 = "f034ac3dac255b543788bc170713f40a87efe9bf"